If you’re upgrading a G-Body car for better stopping power, a rear disc brake conversion kit is often the most effective choice. This guide targets buyers seeking bolt-on upgrades for Buick Skylark, Chevy Camaro, El Camino, Malibu, Monte Carlo, Pontiac Firebird, and related models. The top picks cover drilled and slotted rotors, parking brake integration, and complete hardware kits. Each option is assessed for compatibility and practicality, helping you pick the best fit for your restoration or performance build. The following table summarizes five strong contenders.
| Product | Brand | Best For | Key Benefit |
|---|---|---|---|
| Rear Disc Brake Conversion Kit Drilled Rotor | Fizzvex | Classic G-Body builds needing drilled rotors | Cross-compatibility with 78–87 Buick/Chevy models |
| Inline Tube Compatible with 1978-87 GM G-Body Rear Disc | Inline Tube | Full hardware kit with cross drilled rotors | Parking brake and caliper components included |
| 10 Bolt Rear Disc Brake Conversion Kit Drilled Rotor | SKAUTOPT | Broad GM G-Body compatibility | Comprehensive compatibility list |
| GM 10 Bolt Rear Disc Brake Kit, 78-88 GM G-Body, Std Non E-Brake | JEGS | Non-E-brake setups needing standard kit | Standard kit with essential parts |
| Rear Disc Brake Conversion Kit Drilled Rotor | Woosphy | Replacement for classic G-Body era parts | Targeted Buick/Chevy mid-century models |
Rear Disc Brake Conversion Kit Drilled Rotor for G Body
Brand: Fizzvex. This kit targets Buick Skylark 78-88, Chevy Camaro 82-92, El Camino 78-87, Malibu 78-87, Monte Carlo 78-87, Olds 78-81 and 85-87. Best for classic G-Body restorations requiring drilled rotors and broad compatibility. The kit is chosen for its broad vehicle match and straightforward installation. A limitation could be model-specific fitments outside the listed ranges, so verify your exact year and trim before purchase.
Inline Tube G-Body Rear Disc Conversion With Cross Drilled Rotors
Brand: Inline Tube. Includes cross drilled and slotted rotors with parking brake. Comes with calipers, cables, lines, hoses, nuts, bolts, caliper brackets, and shims. Best for buyers who want a complete, ready-to-install system with parking brake integration. Choose this if you need a full kit with hardware; avoid if you prefer a kit without braking cables or lines because those items are included here.
10 Bolt Rear Disc Brake Conversion Kit Drilled Rotor
Brand: SKAUTOPT. Compatibility includes Buick Skylark 78-88, Chevy Camaro 82-92, El Camino 78-87, Malibu 78-87, Monte Carlo 78-87, Pontiac Firebird 82-92, LeMans 78-81 and 88, Tempest 87-88, Olds 78-81 and 85-87. Best for broad GM G-Body applicability with drilled rotors. The kit is a solid choice for owners who want wide year-range support. Limitation: ensure the exact model-year alignment with the listed compatibility.
GM 10 Bolt Rear Disc Brake Kit, 78-88 GM G-Body, Std Non E-Brake
Brand: JEGS. Fits 1978-1988 GM G-Body vehicles. Standard non-E-brake kit with essential components for a traditional rear disc upgrade. Best for buyers who want a straightforward, no-frills conversion. A potential limitation is lack of an integrated parking brake mechanism, which may require additional parts if parking brake functionality is desired.
Rear Disc Brake Conversion Kit Drilled Rotor (Woosphy)
Brand: Woosphy. Replacement kit compatible with Buick Skylark 78-88, Chevy Camaro 82-92, El Camino 78-87, Malibu 78-87, Monte Carlo 78-87. Best for restoring classic parts with drilled rotors. The kit is selected for targeted compatibility with common G-Body models. Limitation: verify that the exact part number aligns with your vehicle to avoid misfit issues.
GM 10 Bolt Rear Disc Brake Kit, 78-88 GM G-Body, Premium w/E-Brake
Brand: JEGS. Premium kit for 1978-1988 GM G-Body with integrated E-brake. Best for buyers who want enhanced braking performance plus parking brake functionality. Considerations include ensuring your car’s setup supports an E-brake integration and verifying compatibility with the wheel and rotor sizes. Explicit details on included components are not listed here; confirm contents before purchase.
Buying Guide
What should you check before buying a G-Body rear disc kit?
- Vehicle compatibility: Confirm year range and model (Buick Skylark, Chevy Camaro, El Camino, Malibu, Monte Carlo, Pontiac Firebird, etc.).
- Brake type: Drilled vs cross-drilled, with or without an E-brake (parking brake) option.
- Rotor and caliper kit: Ensure rotors, calipers, hoses, and mounting hardware are included or available separately.
- Mounting hardware and brackets: Some kits require additional brackets or shims for proper fitment.
- Wheel clearance: Check rotor diameter and caliper width against wheel spokes and inner fender clearance.
- Maintenance needs: Consider whether rotors are slotted, cross-drilled, or plain, and how that affects cooling and wear.
- Ease of installation: Some kits are “unbox, bolt on, and roll,” while others require more customization or extra parts.
Frequently Asked Questions
- Q: Are these kits compatible with factory wheels?
- A: Compatibility depends on rotor size and caliper width; verify wheel clearance with the specific kit.
- Q: Do all kits include parking brake components?
- A: Some kits include parking brake hardware; others are standard non-E-brake kits. Check product details.
- Q: Can I install these without professional help?
- A: Many kits are designed for bolt-on installation, but some tasks may require mechanical expertise or tools.
- Q: Do these kits fit AH body variants beyond the listed models?
- A: They are designed for common GM G-Body vehicles; verify exact year and model to avoid misfit.